1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* 2 /*
3 * Copyright (C) 2008, Creative Technology Ltd 3 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
4 * 4 *
5 * @File ctresource.h 5 * @File ctresource.h
6 * 6 *
7 * @Brief 7 * @Brief
8 * This file contains the definition of generi 8 * This file contains the definition of generic hardware resources for
9 * resource management. 9 * resource management.
10 * 10 *
11 * @Author Liu Chun 11 * @Author Liu Chun
12 * @Date May 13 2008 12 * @Date May 13 2008
13 */ 13 */
14 14
15 #ifndef CTRESOURCE_H 15 #ifndef CTRESOURCE_H
16 #define CTRESOURCE_H 16 #define CTRESOURCE_H
17 17
18 #include <linux/types.h> 18 #include <linux/types.h>
19 19
20 enum RSCTYP { 20 enum RSCTYP {
21 SRC, 21 SRC,
22 SRCIMP, 22 SRCIMP,
23 AMIXER, 23 AMIXER,
24 SUM, 24 SUM,
25 DAIO, 25 DAIO,
26 NUM_RSCTYP /* This must be the la 26 NUM_RSCTYP /* This must be the last one and less than 16 */
27 }; 27 };
28 28
29 struct rsc_ops; 29 struct rsc_ops;
30 30
31 struct rsc { 31 struct rsc {
32 u32 idx:12; /* The index of a reso 32 u32 idx:12; /* The index of a resource */
33 u32 type:4; /* The type (RSCTYP) o 33 u32 type:4; /* The type (RSCTYP) of a resource */
34 u32 conj:12; /* Current conjugate i 34 u32 conj:12; /* Current conjugate index */
35 u32 msr:4; /* The Master Sample R 35 u32 msr:4; /* The Master Sample Rate a resource working on */
36 void *ctrl_blk; /* Chip specific contr 36 void *ctrl_blk; /* Chip specific control info block for a resource */
37 struct hw *hw; /* Chip specific objec 37 struct hw *hw; /* Chip specific object for hardware access means */
38 const struct rsc_ops *ops; /* Gen 38 const struct rsc_ops *ops; /* Generic resource operations */
39 }; 39 };
40 40
41 struct rsc_ops { 41 struct rsc_ops {
42 void (*master)(struct rsc *rsc); /* Mo !! 42 int (*master)(struct rsc *rsc); /* Move to master resource */
43 void (*next_conj)(struct rsc *rsc); /* !! 43 int (*next_conj)(struct rsc *rsc); /* Move to next conjugate resource */
44 int (*index)(const struct rsc *rsc); / 44 int (*index)(const struct rsc *rsc); /* Return the index of resource */
45 /* Return the output slot number */ 45 /* Return the output slot number */
46 int (*output_slot)(const struct rsc *r 46 int (*output_slot)(const struct rsc *rsc);
47 }; 47 };
48 48
49 int 49 int
50 rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP 50 rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, struct hw *hw);
51 int rsc_uninit(struct rsc *rsc); 51 int rsc_uninit(struct rsc *rsc);
52 52
53 struct rsc_mgr { 53 struct rsc_mgr {
54 enum RSCTYP type; /* The type (RSCTYP) 54 enum RSCTYP type; /* The type (RSCTYP) of resource to manage */
55 unsigned int amount; /* The total amou 55 unsigned int amount; /* The total amount of a kind of resource */
56 unsigned int avail; /* The amount of c 56 unsigned int avail; /* The amount of currently available resources */
57 unsigned char *rscs; /* The bit-map fo 57 unsigned char *rscs; /* The bit-map for resource allocation */
58 void *ctrl_blk; /* Chip specific contr 58 void *ctrl_blk; /* Chip specific control info block */
59 struct hw *hw; /* Chip specific object 59 struct hw *hw; /* Chip specific object for hardware access */
60 }; 60 };
61 61
62 /* Resource management is based on bit-map mec 62 /* Resource management is based on bit-map mechanism */
63 int rsc_mgr_init(struct rsc_mgr *mgr, enum RSC 63 int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type,
64 unsigned int amount, struct h 64 unsigned int amount, struct hw *hw);
65 int rsc_mgr_uninit(struct rsc_mgr *mgr); 65 int rsc_mgr_uninit(struct rsc_mgr *mgr);
66 int mgr_get_resource(struct rsc_mgr *mgr, unsi 66 int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx);
67 int mgr_put_resource(struct rsc_mgr *mgr, unsi 67 int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx);
68 68
69 #endif /* CTRESOURCE_H */ 69 #endif /* CTRESOURCE_H */
70 70
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